Question

PLEASE HELP!!which of the following is the equation for the hori=zontal line that passes through (-1,-3)?
a.y=-1
b.y=-3
c.x=-1
d.x=-3

Answer 1

Horizontal lines always have a y in the equation but not an x. So you know it has to be either choice a or choice b.

If you look at your point (-1,-3), the X-value is -1 and the Y-value is -3, so it makes sense to use the y-value and that's what you do.

It turns out the value of -1 has nothing to do with your answer - you only need the y-value of -3.